AUSTIN — A who’s who of mega corporations and powerful special interest groups propelled House Speaker Joe Straus’ water PAC beyond the $2 million total fundraising mark, according to a new campaign finance report.

The Water Texas PAC reported this week raking in more than $1.1 million in checks and in-kind contributions between Sept. 27 and Oct. 26. That comes on top of the more than $952,000 the PAC collected in its inaugural fundraising period between July 31 and September 26 (click here to see a list of major donors from that report).

Straus, along with Rep. Allan Ritter, formed the PAC in August to sway voters to pass a Nov. 5 ballot measure that would put $2 billion from the state’s rainy day fund toward new water infrastructure projects. It’s labeled Proposition 6 on the ballot.

Much like Water Texas’s first campaign finance report, this week’s filing shows a heavy-hitting lineup of corporate donors and top trade groups are predominantly filling the PAC’s coffers. That includes business interests well outside the realm of water — ranging from the banking sector to telecom to insurance.

Comcast: $21 (In-kind contributions for public service announcements).

Anheuser-Busch Companies: $20,000

Toyota, $15,000

USAA: $10,000

JP Morgan Chase PAC — $10,000

Coca Cola: $8,333

PEPSI: $8,333

Dr Pepper Snapple Group $8,333

An analysis from the watchdog group Texans for Public Justice concluded about half of the PAC’s total haul of roughly $2.1 million comes from water-intensive industries like the energy and natural resources sectors. About 22 percent of that total is from donors in the construction business — another industry with clear interests in seeing the proposition pass because of large contracts that will be generated from new water projects.

But Andrew Wheat, TPJ’s research director, said there’s a group of donors ponying up big bucks and freebies because of “different kinds of interests.”

That brings us to two automakers with manufacturing facilities in Texas, the state’s largest telecom company, the company that operates the state’s lottery, a pair of cable giants, a San Antonio-based supermarket chain and an Alamo City-based insurance company. What do they have to do with a water ballot measure?

Nothing, except that they are all major campaign donors in their own right and know the state’s top leaders are aggressively backing the ballot proposal.

“It’s a scratch my back, I’ll scratch yours type of thing,” Wheat said. “When the governor comes knocking or the speaker comes knocking and they want money for something like this, the lobby is happy to help out.”